William f



W. F. BOWERS. coNcBNTRAToR BELT.

Patented Jan. 1,4,.1896.

CONCENTRATOR-BELT.

c SPECIFICAATION forming part of Letter; Patent No. 552,952, datedJanuary 14, 1896.

d Application lc March 6, 1895. Serial No. 540,757. lio modela To ai!zrmmit may concern..-

lle it imowntltat: l, \\':LL1.\.u lf. ou-tanzt, a citizen of the LnitedStates, rcsidingin the city and county of San tl-rtncisctn State ofCalifornia, have invented an improvcntentin Coneentrater-Belts; and Ihereby declare the following to be a full, clear, and exact descriptionof the sante.

)ly invention relates tothe class of bellal used in concentrating orvauningr machines. These belts are made with a broad concentrating orworking surface and with side (langeswhich keep the material on thebelt. The tlanges of the belt are subject to more wear and tear andgreater strains than other portions, and are liable to and generally dowear ont. and break or crack, or for other reasons become useless',sooner than the remainder ofthe belt. As these belts are made of rubberand are quite costly, it follows that great loss atteints upon thenecessity of discarding a belt; simply because ot' its: injured orwtnthles's: flange, while the working.; portion remains in goodcondition. This contingency has long been the subject of considerationand various efforts have been made to avoid the wearing ont of or otherinjury to thetlanges before the life ot' the lit-lt is ex peuded.

The direction in which soule of these eftorts have been made is inpeculiar slntpes and construction of the llanges, as by arranging tlxetnto fold inwardly upon the belt in passing around the d ruins, orarranging.: them to lie that outwardly or making them somewhatextensible by eorrugating or wat-i ng them. so that they will not undulysf retchzin providing temporary flanges for the belt by raising up theedge ol the belt itself; in some eases by fixed underlying guides orrollers and in others by traveling bands. It has, however, been alsosuggested to make the flanges eutirely indelnzndentof the belt, so thatthey may be removed therefrom when necessary and others snbstitntewl. itis in this latterdireeten thatnty invention lies and its object is toprovide a simple and pr.-|ctieal le connection between the flange andbelt. whereby the former may be readily removed for the substitution ofanother flange.

i groove in the flange, lmeausc in tltescconcenloo RRQ 0K@ \ly inventionconsistsof the improved coneentrato1: lteltnwhichl shall hereinafterfully describe and claim. W

Referring tothe accompanying drawings fora more complete explanationofnty invention, Figure 1 isa perspective view of my concentrator-helt.Fig. isan enlarged detail of sante.

.l isa portion of an culinary rubber belt fora concentrator. Its aideflange ll is made independently of the belt, and is formed with aflaring wedge-shaped base portion la.

0n the sides.' of the belt are formed the lips o, which, as shown, formau undercut groove and are upwardly converging, both as to their 6 innerand outer surfaces, and forni between them a space u', in which the haseI: of the. flange Il fits.

The convergence of the lips u of the belt; and their tlexibility orelasticity cause .said lips, when the belt is. passing around theterminal drums, to lie down toward cach other, and thereby to firmly andperfectly clamp the hase b of the tlange ll. 'l`hisclantping is suicientto hold the flange in place onder 7:,

all circumstances without the use of cement, or any other fastening. Theconnection is one which may be easily made and broken.

It will he seen that the outer surtces of the clamping.: lips are curvedor inclined, so that the clampingefect of said lips is insured, and afurther advantage is obtained of avoiding an angle or corner in thechannel of the belt for accumulations of sand.

Itis a ditln-nlt matter toltold an independent flange to a belt, and ithas: been the custotn heretofore to provide additional fastening for theflanges-as, for example, where indeln-ndeut rubber flanges arc :set intogrooves in the belt edges cement must be used, for the rwtson thatvthere was no clan\p ingl ctl'et-t upon the baseot' the tlangehyreasonol' convergingr lips adapted to lie down upon said hase, as in my case;and without the cement it would be impossible to hold such a flange inplace as the belt lutsacs around the end drums. Norisit practicable toconnect :tu independent llange with the edge of the belt by inserting.rsaid edge in a with pinning scpzmllml upwardly vnnxmgin;r lips.furmngzxn undercut :nunk-unl :m

'-mwnz: lips, the walls uf nach ut nid 15p In \\l ma when-uf l lmvclwrcunln sul my

